This is a 500mw 405nm blue violet laser pointer, it is built with focusable head, and waterproof function, which has excellent burning capability, its not as bright as te 445nm blue laser(beam is almost invisible), but it burns great as the same as the 500mw 445nm laser(burn matches, light cigars, cut tapes, POP balloons and light fireworks), and the price is much much cheaper !